Electrosonator.



R. sAKAMoTo. ELEGTRosoNAToR. APPLIQATION FILED APB..11, 1907.

Patented Oct. 6, 1908.

v W/TNESSES K V x l UNITED sTATEs PATENT oEEioE.

RYUSAl SAKAMO'FO, Ol" TUKYO, JPAN.

ELECTROSONATOR.

Specification of Letters Patent.

vPatented oct. e, 1908.

v Application led April 117 1907. lSerial No. 367,492.

To all whom it may concern:

Be it known that l, RYUsAi SAKAMOTO, a

subject of the Emperor of Ja an, and'reside ing'at No. .25 Yanagi-cho, `chigaya, Ushigome-ku, Tokyo, Japan, have invented lnew and useful Improvements in Eleetroson-ators,

of which the following is a full, clear, and

' exact description. c

This invention relates to sound transmitters tor transmitting sound into the human body to an internal organ The object of the invention is to provide a device in which the sound is produced by a vibrator operated from `an electromagnet, the eiitirel device beingself-contained and readily held in the hand. By the use of this device, the examiner who listens through a stethoscope applied to the body adjacent the sound producer, may readily determine the exact position, form and motion of the internalorgan of the body, as well a's accurately determine any dislocation', enlargement or diseased condition.

Reference is to be had to the accompany-v ing drawings forming a part of this specification, in which the ligure shows a perspective view of iny improved device, a portion thereof head 11.

being broken away.

As shown, a wooden cylinder 33 carries at' its end a frame formed of Abrass and including a. ring 10 and two pairs of posts 14 and 16. The two posts 14 and 16 of each pair are connc'cted together by. transverse members 15,

and thepost Hof one pair is connected to the post 16 of the other pair by a transverse,

member 13.' The transverse members are each made up of two layers and the ends of the member 13- are .preferably inserted bef4 tween the separate layers of the member '15 above the postsA 14. The members 15 serve as guides for a slide 13a, which may be moved along the members 15 by a sciew 12 having a At the outcr end of the slide is a set screw .17, acting as a stop and liavinga lock nut 18 mounted thereon and ada ted to able slide 6.

.the battery.

able form of storage battery. The battery is supported above-thc lower cap 1f by a coi-l spring 2, which also serves to electrically'coiineet the lower metal cap 1 with tliccasing` of the battery, which forms oiicof its electrodes. At the upper end of the storage battery, is 'a' 'second'coil 32, one end of which is connected to the central electrode of the storage battery and the other end of which is connected to one end of the 'wire forming thecod.

electrical contact with a loiigitudinally-niovsuitable knob 7, and when forced upward may come into-engagement with acont act or spring "S carried by the collar S) above referred to.

l\louiited at oneside of the outer cylinder, and extending ybeneath the stop 17, is a plate spring -20 serving as a vibrator. 0n the under surface ofthe plate is an armature '.21 which may be drawn down upon the energizing of the electroinagiiet, and upon the outer "surface is a small coating of platinum 19 which may comev in contact with the lower end ofv the set screw or stopv 17... i Journaled on a pivot 26 at the outer end of the plate spring, is a brass rod-24 terminating in a ball- ,25 of insulating material, preferably, ebon ite, and both thorod and the spring-are supported from a brass plate 23, electrically coniiected to' the upper end of the coil-of the magnet for insulated from the remaining stri'i'cture. i

In'using the device, the rod 24 is swung outward to a position substantially at right angles to the'general direction of the length Lof the cylinder, and the slide 6 is moved-up to contact with the spring 8. The current may `then flow. from the battery through the spring 2, casing 1, strip 5, slide 6, spring S, to

the posts of the frame, and thence t0 the set i screw 17. From here the current ilows through the plate spring to the plate 23 and thence through the'electroinagnet back to The action ofthe magnet draws down the electrode 21 to break the .connection at the lower'end of the stop or set screw 17, and this breaking of the circuitdcenergizes the magnet and permits the spring and armature to return, and the operation is repeated. The current is thus repeatedly interrupted and the plate spring vibrates rape idly, making a buzzing'sound as long as the slide 6 is held in engagement with the spring 8. The vibration of the plate spring will be.

The slide may be operated by a- The lower capi is connected to a strip 5 extending along the length of the cylinder and in lio transmitted to the ebonite ball 25 through the medium of the brass rod 24, and the ebonite ball is held in contact with the human body adjacent the organ which it is desired to examine. 'The pitch` of the vibrator may be varied by turning the screw l2 to vary the point of contact between the vibrator and the stop 17., and the extent of vibration may be varied by rotating the stop. The head 11 on the screw 12 may, if desired, be formed of cellul'id.. and may constitute the portion held in engagement with the body.

In using-fm improved apparatus, the cyl- 'l inder 33 is heldin one hand and the button? is moved upwardly by means of the thumb,

to bring the slide 6 into engagement with the is moved about over the surface of the body being examined, andthe examiner listens through the stethoscope to distinguish variations in the sound,V as the latter is transl 'mitted from the apparatus through the body to the stethoscope.

In examining an inv ternal organ, it will be noted that a marked difference in the sound is noticeable, as the ball passes beyond the margin of the organ.

Thus, the shape, size and exact location -of the organ may be readily determined.

By means of my improved apparatus, I produce a musical sound of uniform and constant pitch and Wave length and capable of Abeing maintained for a long time. The extent l of the vibration may be varied for examination of different organs.

The construction' of the apparatus is very simple, its manipulation easy, and the part which touches the body is small so that it may be used upon all portions of the body. No perceptive pain or disagreeable feeling is felt by contact with the skin.

Having now particularly described and ascertained tho'nature of my said invention and in what manner the same is to be performed l declare that what l claim is1 1. A device of the class described, comprising a casing, an electromagnet, and a battery mounted Within said casing, an electric plate spring mounted on said casing adjacent said electromagnet, a frame carried by said casing and disposed adjacent said plate spring, a regulating screwinounted in said frame for engagement with said spring to limit the movement thereof, and means for moving said regulating screw laterally to Lvary its point of contact on the spring.

2. A device of the class described, comprising a casing, an electromagnet, and a battery mounted Within said casing, an electric plate spring mounted on said casing adjacent said electromagnet, a frame carried by said casing and disposed adjacent said plate spring, a regulating screw mounted in said frame for engagement with said siring to limit the movement thereof, and a s ide carried upon one side of said casing and movable longitudinally for closing the circuit through said plate spring.

In testimony whereof I have hereto signed my name in the presence of two subscribing Witnesses.

RYUSAI SAKAMOTO.

Witnesses:

R. S. MILLER, M. NAMBER. 

